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Intersomatic spine implant having anchoring elements

  • US 6,527,803 B1
  • Filed: 12/21/2000
  • Issued: 03/04/2003
  • Est. Priority Date: 06/23/1998
  • Status: Expired due to Term
First Claim
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1. An intersomatic spine implant comprising:

  • a body having at least one anchoring element movable relative to the body to project from top and bottom contact faces of the body for contacting a vertebra; and

    at least one cam slidable relative to the body for displacing the anchoring element relative to the body through the faces by the effect of a ramp engaging the anchoring element, the cam and the anchoring element arranged so that the cam forcibly extends and retracts the anchoring element relative to the body, the cam having an element thereon for engaging the anchoring element to forcibly retract the anchoring element from the vertebra, the anchoring element having an enlarged portion for engaging said element on said cam, and the retraction element on said cam being a slot adapted to receive said enlarged portion of said anchoring element, wherein said slot extends radially outwardly relative to said cam axis, each slot having a first and second portion radially displaced from said cam axis wherein said first portion is at a distance which causes said anchoring element to move into engagement with said vertebra and said second portion is at a distance which causes said anchoring element to move out of engagement with said vertebra.

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